Class TModBusDriver
Unit
Declaration
type TModBusDriver = class(TProtocolDriver)
Description
TModBusDriver
Hierarchy
- TComponent
- TProtocolDriver
- TModBusDriver
Overview
Fields
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PFirstRequestLen:LongInt; |
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PFuncByteOffset:LongInt; |
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PCRCLen:LongInt; |
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POutputMaxHole:Cardinal; |
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PInputMaxHole:Cardinal; |
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PRegistersMaxHole:Cardinal; |
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PInternalDelayBetweenCmds:Cardinal; |
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PModbusPLC:array of TModBusPLC; |
Methods
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function AllowBroadCast:Boolean; virtual; |
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function GetTagProperts(TagObj:TTag; var Station, Address, Size, RegType, ScanTime:LongInt):Boolean; |
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procedure SetOutputMaxHole(v:Cardinal); |
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procedure SetInputMaxHole(v:Cardinal); |
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procedure SetRegisterMaxHole(v:Cardinal); |
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procedure BuildTagRec(plc,func,startaddress,size:LongInt; out tr:TTagRec); |
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function EncodePkg(TagObj:TTagRec; ToWrite:TArrayOfDouble; var ResultLen:LongInt):BYTES; virtual; |
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function DecodePkg(pkg:TIOPacket; out values:TArrayOfDouble):TProtocolIOResult; virtual; |
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function RemainingBytes(buffer:BYTES):LongInt; virtual; |
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procedure DoAddTag(TagObj:TTag; TagValid:Boolean); override; |
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procedure DoDelTag(TagObj:TTag); override; |
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procedure DoScanRead(Sender:TObject; var NeedSleep:LongInt); override; |
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procedure DoGetValue(TagObj:TTagRec; var values:TScanReadRec); override; |
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function DoWrite(const tagrec:TTagRec; const Values:TArrayOfDouble; Sync:Boolean):TProtocolIOResult; override; |
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function DoRead (const tagrec:TTagRec; out Values:TArrayOfDouble; Sync:Boolean):TProtocolIOResult; override; |
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function SizeOfTag(aTag:TTag; isWrite:Boolean; var ProtocolTagType:TProtocolTagType):BYTE; override; |
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procedure OpenTagEditor(InsertHook: TAddTagInEditorHook; CreateProc: TCreateTagProc); override; |
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function HasTabBuilderEditor: Boolean; override; |
Properties
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property OutputMaxHole: Cardinal read POutputMaxHole write SetOutputMaxHole default 50; |
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property InputMaxHole: Cardinal read PInputMaxHole write SetInputMaxHole default 50; |
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property RegisterMaxHole: Cardinal read PRegistersMaxHole write SetRegisterMaxHole default 10; |
Description
Fields
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PFirstRequestLen:LongInt; |
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PFuncByteOffset:LongInt; |
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PCRCLen:LongInt; |
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POutputMaxHole:Cardinal; |
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PInputMaxHole:Cardinal; |
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PRegistersMaxHole:Cardinal; |
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PInternalDelayBetweenCmds:Cardinal; |
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PModbusPLC:array of TModBusPLC; |
Methods
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function AllowBroadCast:Boolean; virtual; |
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function GetTagProperts(TagObj:TTag; var Station, Address, Size, RegType, ScanTime:LongInt):Boolean; |
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procedure SetOutputMaxHole(v:Cardinal); |
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procedure SetInputMaxHole(v:Cardinal); |
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procedure SetRegisterMaxHole(v:Cardinal); |
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procedure BuildTagRec(plc,func,startaddress,size:LongInt; out tr:TTagRec); |
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function EncodePkg(TagObj:TTagRec; ToWrite:TArrayOfDouble; var ResultLen:LongInt):BYTES; virtual; |
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: Encode a modbus packet. | |
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function DecodePkg(pkg:TIOPacket; out values:TArrayOfDouble):TProtocolIOResult; virtual; |
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: Decodes a modbus packet. | |
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function RemainingBytes(buffer:BYTES):LongInt; virtual; |
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: Returns the remaing bytes on RX buffer of communication port. | |
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procedure DoAddTag(TagObj:TTag; TagValid:Boolean); override; |
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: See also | |
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procedure DoDelTag(TagObj:TTag); override; |
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: See also | |
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procedure DoScanRead(Sender:TObject; var NeedSleep:LongInt); override; |
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: See also | |
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procedure DoGetValue(TagObj:TTagRec; var values:TScanReadRec); override; |
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: See also | |
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function DoWrite(const tagrec:TTagRec; const Values:TArrayOfDouble; Sync:Boolean):TProtocolIOResult; override; |
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: See also | |
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function DoRead (const tagrec:TTagRec; out Values:TArrayOfDouble; Sync:Boolean):TProtocolIOResult; override; |
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: See also | |
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function SizeOfTag(aTag:TTag; isWrite:Boolean; var ProtocolTagType:TProtocolTagType):BYTE; override; |
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: See also | |
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procedure OpenTagEditor(InsertHook: TAddTagInEditorHook; CreateProc: TCreateTagProc); override; |
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: See also | |
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function HasTabBuilderEditor: Boolean; override; |
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: See also | |
Properties
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property OutputMaxHole: Cardinal read POutputMaxHole write SetOutputMaxHole default 50; |
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: How many digital outputs can be undeclared to keep the block continuous. See also | |
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property InputMaxHole: Cardinal read PInputMaxHole write SetInputMaxHole default 50; |
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: How many digital inputs can be undeclared to keep the block continuous. See also | |
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property RegisterMaxHole: Cardinal read PRegistersMaxHole write SetRegisterMaxHole default 10; |
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: How many registers can be undeclared to keep the block continuous. See also | |
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